Performance of Improved Poly vinyl alcohol as an Ageing Resistance Agent
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| Format: | Article |
| Language: | English Slovak |
| ISSN: | ISSN 0034-5806 |
| Online Access: | http://www.viks.sk/chk/res_2_04_129_140.doc |
| Abstract: | SUMARRIES. Investigations have continued for improving the ageing resistance of local (Egyptian) alum-rosin sized paper sheets. In this work we intended to investigate the durability of polyvinyl alcohol (PVA) as a treatment polymer on locally produced paper and as a resizing agent to strengthen decayed papers. In this respect, the treatment of such paper samples with a PVA-borax system was carried out before and after accelerated ageing for 6 days. The concentration of PVA was also optimized. The strength and optical properties, as well as thermogravimetric and IR-spectra analyses showed the success of using a PVA-borax system for the intended purpose in comparison with using individual PVA alone. Optimum improvement was achieved using 0.5-0.75 % PVA and 2% borax. |
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| ISSN: | ISSN 0034-5806 |
